Citazione Stile APA (7a Edizione)

Sivard, R. L. (1987). World military and social expenditures, 1987-88. World Priorities.

Citazione stile Chigago Style (17a edizione)

Sivard, Ruth Leger. World Military and Social Expenditures, 1987-88. Washington, D.C: World Priorities, 1987.

Citatione MLA (9a ed.)

Sivard, Ruth Leger. World Military and Social Expenditures, 1987-88. World Priorities, 1987.